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WATCH.

N0. 512,328. Patented Jan. 9, 1894.

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N. M. SAATI.

vWATGHI Patented Jan. 9, 1894.

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WATCH.

Patented Jan'. g; 1894.

ml unicum. Llwonwlm COMPANY.

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UNITED STATES PATENT OFFICE.

NOVVMAN M. SAATI, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO HIMSELF AND 'WILLIAM A. VALTON, OF SAME PLACE.

WATCH.

SPECIFICATION forming part of' Letters Patent No. 512,328, dated January 9, 1894.

Application filed September 2l, 1892. Serial No. 446,490. (No model.)

To LZZ whom it may concern:

Be it known that I, NOWMAN M. SAATI, a subject of the Sultan of Turkey, residing at Providence, in the State of Rhode Island, have invented a new and useful Improvement in Time-Keeping Mechanisms, of which the following is a specication.

The object of my invention is to dispense with the ordinary train ot' gearing between the actuating spring or weight, and the escapeinent wheel, and to simplify and cheapen the construction of the operating mechanism of a watch or clock, and 'my invention consists in the employment of a spiral groove, or worm, and suitable engaging members, for imparting the desired rotary movement to the escapement wheel.

It also consists in the combination with the escapement wheel, of an improved device for reducing the rate of movement between the axle of the escapement wheel, and the minute or hour hands.

It also consists in an improved combination lof time indicating hands, with the winding barrel and axle for the main spring or weight.

In the accompanying drawings: Figure 1, represents a back view of the movements of a watch embodying my invention. Fig. 2, represents a section taken in the line 2, 2, of Fig. 1. Fig. 3, represents a section taken in the line 3, 3, of Fig. 9. Fig. 4, represents a detail view, showing the lever for one of the engaging members, and its connected catch, from the engaging side. Fig. 5, representsa detail view, showing the lever for the opposite engagingmember, andits connected catch, from the engaging side. Fig. 6, represents an edge View of the lever and catch, shown in Fig. 5, and a face view of the supporting disk from the side of the attaching plate. Fig. 7, is a detail View showing a portion of a regulator for the balance wheel. Fig. 8, represents a detail section, taken in the line 8, 8, of Fig. 1, showing the regulating mechanism. Fig. 9, represents a view of the front side of the watch movement, showing the gears for operating the minute and hour hands. Fig. 10, represents an under view of the device for operating the minute hand by means of an eccentric upon the axle of the eseapement wheel. Fig. 11, representsase@ tion taken in the line 11, 11, ot Fig. 10, showing also a detail section ot' the attaching plate of the watch. Figs. 12 and 13 represent diereut forms of the engaging lever, for operating 5 5 the minute hand, from the eccentric according as the movement of the escapement wheel is in one direction, or the other. Fig. 14., represents a view of the face of the watch, showing two sets of hands; one upon the axis of 6o the escapement wheel, and the other upon the axle of the driving wheel. Fig. 15, represents a plan view, showing a modification in the mechanism for imparting motion to the escapement wheel. Fig. 16, represents an inside view of the lever for one of the engaging members, and its pivoting disk, at one side of the toothed driving wheel. Fig. 17, represents an inside view of the lever for the engaging member at the opposite side 7o Fig. 18, represents an f.

through the main-spring barrei in the line 3, 8o

3, of Fig. 2. Fig. 21, represents a mod itication of the device for operating the minute hand, from an eccentric upon the axle of the escapement wheel. Fig. 22, represents a section of the same taken in the line 22, 22, of

Fig. 21. Fig. 23, represents a detail plan view showing a modification, adapted for a clock movement, in which a single lever is employed for both engaging members. Fig. 24., represents a detail side View of the same. 25 and 26, are views representing a sliding carriage for the engaging members. Figs. 27, 28 and 29, are detail views, showinga moditication in the worm of the escapement wheel.

In the accompanying drawings, A represents the supporting plate of a watch movement, and B the dial, which is supported by the rim C. The barrel D is held loosely upon the axle a, of the toothed wheel E, which is supported by the bridge A and provided with roo a squared hub b, upon which is placed .the ratchet wheel F, the said ratchet wheel being Fig. 19, represents an en- 7 5 Figs. 9o

jf'wh'ch is ladapted to enter the l of., The disk K',

held in its set position, by means of the spring actuated click c. The main spring Gl is secured at its outer end to the wall d of the barrel D, and at its inner end to the arbor e which is attached to the axle a of the Wheel E, so

that when the barrel is held in a fixed position by means of the ratchet wheeland click,

rotary motion will be imparted to 'the wheel E by the resilience of the spring G. The axle f, of the escapement wheel H, is provided With a screw thread or Worm g, adapted to receive the engaging members h, h', of

the levers I, I', which levers are yfirmly at' i the shank Z,of the adjustable arm L, which projects from the side of the axle toward the dis'knK, the said arm being held in position by means of the 'set screw Z; and to the arm L, is jointed the 'catch M, which engages with the teeth of the wheel E, the said catch being forked at its outer end n, so as to embrace the edge of the wheel E, and be supported thereby, at any 'position in which the sai'd catch may be placed, whether in, or out o f engagement with the teeth of the wheel E, the engaging spur m, of the catch M, being adapted at its inner side for engagement with the yradially'directed front side of the teethe2 of the wheel E. The disk K is .pivoted by means of a'stnd vo, which projects from both sides of the disk and extends into `the perforation p in the plate A, and also into the perforation q in the bridge N, and

'to the bearing standard-1', is attached the flat disengaging sprlng r, the forward end of c space between the teeth of the wheel E. c To the side m2 of the Adisk K, adjacent to the plate A, is attached thewi're spring s, which bears against `the cornertl'of the plate lA and loperates to slightly turnA the disky K, and throw the engaging member h of the lever I, toward the "side offtle axle ffor engagement with the worm g, t'lie'sprin'g s being in all 'cases made weaker 'thanthe opposite disengaging spring y y arrangedl at the opposite side of the wheel E, carries the lever I', having a pivoty axle J which is provided with the adjustable arm L', projecting from the side of the axle J', opposite to that of the armlLnpon the axle J, the said axle J and lever l being'V actuated by means of the torsion springy', to throw the engaging member h' ofthe lever I,'to'ward the'side c2 of the es-l fcfapenent -wheel H, as above described for the lever I, vattached. to the disk K.

To the arm L', is jointed the catch M' which is also forkedxat itsout'er end n', as in the case'of the catch M, andthe spur m' is arranged to engage at its outer side with the teeth of the wheel E, and to the standarde of the plate K', is attached the flat disengagingv spring r', the curved end of which is adapted to enter the space between-the teeth of the gear` E', the said disengaging spring r', being made stronger than the wire spring s', which -is arranged at the opposite side of the disk K' to turn the said disk and lever I' upon the pivot stud o' so that the engaging member h of the lever I', will be carried toward the side of the axle f, for engagement with the worm g, the pivot stud o' being held by the plate A, and a bridge N', as in the case of the diskK before described, the pivots o and o being preferably so arranged, relatively to the point of action of the catchesM and M', upon the teeth of the'wheel. E, that the natural tendency will be to preserve the engagement of the said catches with the teeth, rather than to cause their disengagement, and the pivotal movement of the disks K, K', will be limited by the opposite sides ot' the recesses f3, f4, of the plate A, in which the said disks are placed, so that the engaging members h, h', will not bear against the side of the axle f,to cause friction upon the ksame, and also that the said engaging members will not be carried outward to an undesirable distance from the side of the worm, and the stop pins p4, p4, will serve to prevent the contact of the members 717t, with the wheel H.

When the balance U, is set in motion, the

IOO

consequent movement of the escapement les ver P will allow the escapement wheel H of sixty teeth, to revolve tooth by tooth, the power of the main spring G, being transmitted to the escapement wheel HV by means of the engaging members h, h', of the levers I, I', and the worm g, the operation of the said engaging members being as follows: When the main-spring G has been Wound up, by turning the barrel D in the proper direction, the resilience of the spring will tend to cause the movement of the wheel E inthe same direction 5 as shown by the arrow in Fig. Land the engagement of the teeth of the gear E, with the side of the spur fm, of the fcatch M, will 'cause a pull upon the arm L, tending to turn the pivot axle J and thus cause the pressure of the engaging member h of the lever I, against the coils of the wormgjto produce a rotary movement of the escapement wheel in the direction of the` arrow in Fig. 1, and, since there are live full turns in` the worm g, upon the fullcompletion of the movement ot' the lever I, by the pressure of 4the tooth of the gear E, against the spur m, of the catch M, the escapement wheel H will have been turned tive times, subject to the regulating action of the escapement lever O, and

'prior to the disengagement ofthe engaging member h ot' the lever I, with the coils of the rworm g, the engaging member hof the lever l'IO IZO

I' will have been brought into engagement therewith; with the spur m' of the catch M', in engagement with a tooth of the driving wheel E, whereupon the pressure of the tooth of the wheel E, upon the spur m will cause a push upon the arm L', tending to turn the pivot axle J', and thus cause a pressure of the engaging member Zt' of the lever L', against the coils of the worm g, to continue the movement ot' the escapement wheel H, after the disengagement of the engaging member ZL of the lever l, from the said worm, such disengagement being eiected by the action ot a moving tooth of the wheel E, upon the disengaging spring r, to cause the turning ofthe disk K, and its attached mechanism, upon the pivot 0, against the weaker action of the spring s, so that, the spur m will be thrown back out of engagement with the tooth e2 of the wheel E, and the engaging member 7L of the lever l, will be thrown back from the axle f of the escapement wheel, and as soon as the spur m, is released from its engagement with the tooth oi' the wheel E, the resilience of the torsion spring j, will cause the movement of Vthe engaging member h of the lever l, back toward the side c2 of the escapement Wheel, preparatory to re-engagement with the inner end d3 of the worm g, and as the movement of the escapement wheel H is being continued by the pressure exerted by the tooth of the wheel E, against the spur m of the catch M', which causes the outward movement ot the lever l', in engagement with the worm g, the disengaging spring r, will become released from engagement with the tooth c2 of the wheel E, so that the opposing spring s, can act to turn the disk K, back to its former position, in which the spur m is again in engagement with a tooth of the wheel E, wherenpon,the movement of the wheel E, will cause the outward movement of the engaging member ZL of the lever I, from the side c2 of the escapement wheel, into engagement with the coils of the worm g, as before; and as the movement of the wheel E continues, and the engaging member Zt' of the lever l', completes its traverse through the coils ot the worm f, a tooth of the wheel E, will come into engagement with the end of the disengaging spring o" and cause the turning of the disk K' and its attached mechanism, upon the pivot 0', against the weaker action of the springs', so that, the spur m', will be thrown back out of engagement with the tooth c2 of the wheel E, and the engaging member 7L of the lever l', will be thrown back from the axle f of the escapementwheel; and, as soon as the spur m', is released from its engagement with the tooth of the wheel E, the resilience of the torsion springj', will cause the movement of the engaging member Zt' of the lever l', back, toward the side c2 of the escapement wheel, preparatory to re-eugagement with the inner end of the worm g; and as the movement of the escapement wheel ll is being continued, by the pressure exerted by a tooth of the wheel E, against the spur m of the catch M, which causes the outward movement of the lever I, in operative enga-gement with the worm g, the disengaging spring r', will become released from engagement with the tooth of the wheel E, so that the opposing spring s', can act to turn the disk K', back to the position 'in which the s )ur m' is again in engagement D t3 D with a tooth of the wheel E, whereupon the movement of the wheel E will cause the outward movement of the engaging member 7L ot the lever l', from the side c2 ot the escapement wheel, into engagement with the coils of the worm g, as before; and this operation will be continuously repeated, so that, upon the movement of the wheel E for the space of a single tooth with the engaging members 7L and ZL operating in the coils of a worm g of tive turns, ten entire revolutions will be imparted to the escapement wheel, and a time piece constructed upon the principle of the engaging members and worm, instead of the ordinary train of gearing, will operate with a greatly reduced expenditure of power, a much weaker main-spring being amply sufiicient for the purpose.

The driving wheel E is represented in the drawings as having seventy-two teeth, and the escapement wheel H sixty teeth, with a worm g of live turns; and the gearing to operate the hands of the time piece, may be driven, either by the axle f, of the escapement wheel, or by the axle d of the wheel E, or by both, as shown in Figs. 3 and 9, and when both are employed, the true time at two different places may be kept by the same watch, or the watch may be set, for both the standard, and the true time, at any given place. As the escapement wheel H of sixty teeth will make one revolution in a minute, the seconds hand fr, may be attached to the axlef of the said wheel, and in order to reduce the movement, for the purpose ot driving the minute band y, the eccentric t, is attached to the axle f, and covered by the circular bridge l), which is secured to the plate A by means of the screws a, u, and over the eccentric t, is placed the eye d', of the lever arm b2, ot the compound engaging lever Q, the said lever arm being provided with the slot fr adapted to receive the tulcrnm pin o attached to the plate A, and also with a circular head b3, adapted to enter the circular socket b4, of the lever arm h5, the said arm being provided with the slot c2, adapted to receive the fulcrum screw c3, and with the curved arms c4, c4, having at their outer ends the engaging spurs Z2, Z2, adapted to engage with the teeth of the minute wheel R of sixty teeth, which wheel is placed loosely upon the stationary hub t' at the outer side of the bridge P, the said wheel being provided with the elongated hub w, upon the upper end of which is placed the minute hand y; and when the escapement wheel H is in motion, the engaging spurs Z2, Z2, of the compound lever Q, will engage alternately with the teeth at op- IOO IIO

posite edges of the minute wheel, to cause a single revolution of the same, when the es'- capement wheel has made sixty revolutions; the eccentric t which tits the eye a' ot the compound lever Q, serving to cause the engaging spurs Z2, Z2, to impart the required rotary movement to the wheel R, by their alternate engagement and disengagement with the teeth of the same; the compound lever Q in this case serving to cause the rotation of the wheel R, in the proper direction for the minute hand of the watch. But in case it is not desired to employ a second hand x, then the escapement wheel H, and its eccentric t, may be caused to revolve in the opposite direction, so that a single engaging lever Q shown in Fig. 12, may be employed, the operation of the eccentric t, inl that case serving to rotate the wheel R in the proper direction; and in.order to apply the minute wheel R of sixty teeth to a Watch the balance of which is arranged to beat quarter seconds, the eccentric 25 is placed upon the axle f of the escapement wheel, as shown in Figs. 2l and 22, and a pinion m2 of six teeth secured to the hub of the eccentric, under the bridge P, the said pinion being made to engage with a gear m3 upon the axle m4, to which axle the second hand is to be attached, the minute Wheel R being held loose upon the stationary hub t', at the outer side of the bridge P; and in order to provide for the action of the single lever' Q', which performs one hundred and twenty vibrations per minute upon the minute wheel otv sixty teeth, the engaging spurs Z2,- Z2, of the lever Q', are provided with the notches n2, which are adapted to receive the pointed ends o'f the teeth o2, of the minute wheel, the said engaging members being also adapted to enter the spaces between the said teeth, and in'this case, the eccentric t which fits the eye a', is made with a throw adapted to cause the movement of the wheel R, for the space of one half a tooth, at each revolution of the eccentric t, the spurs Z2, Z2, first engaging with lthe tooth, and then entering the space, and

so on, alternately, so as to impart a rotary movement to the wheel R, in which two revolutions of the eccentric t,.will serve to impart a movement of one tooth to the wheel R, and in this case, the escapement wheel, upon the axle of which the eccentric t is placed, is to be driven in a direction contrary to that shown in Fig. 1, the reversal of movement to accommodate the second hand being effected by the action ot the pinion m2 and gear m2.

The hub w of the minute wheel R, is provided with the pinion w of ten teeth, which engages with the gear @u2 of fortyl teeth, and to the side of the gearw?, is attached to the pinion w3, of twelve teeth, the said gear w'2 and pinion w'being held upon a stud b', which is 'supported by the bridge S, and the pinion ws'of twelve teeth engages with the gear zo, of thirty-six teeth, the said gear being provided with the hub 105, upon which is placed the hour hand z.

Thesupplementary hour hand z is arranged upon the axle a of the driving wheel E, and upon the axle d at the outer side of the bridge T, is placed the cannon gear c of forty-eight teeth, the said gear being frictionally held upon the said axle, and the frictionally held gear c engages with the pinion cZ of twelve teeth, which is attached to the sideof the gear e', of forty-eight teeth, the said gear and pinion being held to revolve upon the screw stud f', held in thebridge T, and the gear e engages with the pinion g3 of twelve teeth, revolving upon the hub 715 of the gear c', the said pinion being provided with an elongated hub u upon which is placed theminute hand y', thus readily providing two sets of time keeping' hands, in the same Watch or clock,

The parts of the watch movement may be diierently arranged, that is, the axle a, of the driving wheel E, may occupy the central p'osition upon the dial B, which is occupied by the axle f of the escapement wheel E, the minute and hour hands being placed upon the a'xle a of the wheel E, as described.

The regulator for the balance U, is formed of a split toothed ring t", which is provided at one side with the arm 2, having the down-v wardly projecting pins is, 713, adapted to engage with the hair springj. The ring rl is split at the line i", so thatA the ring can be readily sprung into the under cut circular groove t5, of the bridge V, which supports tlie axle of the balance U, and the teeth of the ring t" engage with the pinion 7'2, attached to the axle la', which passes through a perforation k2 in the bridge' V, and upon the outer end of which is placed the graduated disk W, provided with a milled edge, and by turning the disk W in either direction, the arm i2 will be moved in the opposite direction to effect a change in the vibration of the regulating spring, and the resilience of the split ring in the groove t5, forms a friction bearing which holds the arm 2 steady, and prevents injurious back lash when the movement of the watch is being regulated.

A modification of my improved time keep-v ing mechanism is shown in Fig. 15, in which the engaging levers l2, 13, are pivoted to the lugs p2, upon the pivoted supporting disk K2, K3, by means of the screws s2. The lever I2 is provided with catch r2, which is integral with said lever, the said catch being adapted for engagement with the teeth of the wheel E, and at the rear of the catch r2, is placed the light spring r3, which tends to throw the lever 12 toward the side c2 of the escapement wheel, and also to turn the disk K2, slightly upon its pivot q2, to throw the engaging member h2 of the lever I2, away from the axle f, so as not to engage with the worm g, upon the subsequent movement of the said engaging member toward the side c2 of the said wheel. The engaging lever Is at the op- IOO posite side of the wheel E, is provided with the short stud t2, at the back of which is arranged the light spring r4, which serves to move the lever 13, toward the side c2 ot the escapement wheel, and also to turn the disk K3 slightly, upon its pivot qq, to throw the engaging member h3 of the lever 13, away from the axlef, thus preventing engagement with the worm g,upon the subsequent movement of the engaging member toward the said side c2. The catch leverXis interposed between the stud t2 of the lever I3, and the teeth of the wheel E, in order to provide for the reverse direction of the movement of the teeth, at the side ot the wheel adjacent to the .disk K3, from that of the same teeth at the side adjacent to the disk K2, so that the engaging member h3 of the lever I3, will be operated to engagement with the worm g and disengagement therefrom, in the same manner, as in the case of the engaging member h2 of the lever l2, the catch lever X being pivoted to the post t3, the arm t* of the said lever resting in front of the stud t2, and bearing against the same, and the arm 255, engaging with the teeth e2 of the wheel E, to produce the required movement of the catch lever to cause the proper movement of the disk K3, and the engaging lever l5. When the tooth e2 is in engagement with the catch r2, of the lever l2, as shown in Fig. 15, the disk K2 will be first turned so as to carry the engaging member h3 of the lever l2 toward the axlefof the worm g, and the continued movement of the tooth c2 will cause the engaging member h2 to move along the coils of the worm, and impart the required movement to the escapement wheel, until finally the engaging member willbe brought clear of the worm at its opposite end,so as to cease its action thereon, and the tooth e2 will pass clear of the catch r2. Then the action of the spring r3, will serve to turn back the disk K2 on its pivot q2, and to throw back the engaging member [L2 ot' the lever l2 to a point beyond the line ot' the coils of the worm, and back toward the side c"3 of the wheel ll, preparatory to re'- engagement with the worm, and in the mean time the action ol the tooth e2, upon the arm 't5 of the catch lever X will serve to carry the said arm forward, and throw the arm t* backward, so as to press against the stud t?, to first cause a slight movement of the disk K3 upon its pivot if, and an inward movement of the engaging member 7i ot the lever 13, toward the axle f of the worm g, and then, the continued movement of the tooth c2, will cause the engaging member 7a3 to move along the coils ot the worm, and thus impart the required movement to the escapement wheel, until the said engaging member passes out of the coils, at the opposite end of the worm, so as to cease its action thereon, and the tooth e2 will pass clear of the arm t5 of the catch lever X. Then the action of the spring rt, will serve to turn back the disk K3 on its pivot g3, and

to throw back the engaging member h3 of the lever 13, to a point beyond the line ot' the coils of the worm, and back toward the side c2 of the wheel Il, preparatory to re-engagement with the worm upon the subsequent engagement, of a tooth of the wheel E with the arm t, and the engaging members of the levers l2, ls, will be operated alternately into engagement with the worm g, to produce a continuous movement ot the escapement wheel H. The pivotal movement ot the disks K2, K3, may be properly limited, so that the engaging members 7b2, h5, will not bear against the side of the axlef, to cause friction upon the same, and also that the said engaging members will not be carried outward to an undesirable distance from the side of the worm, by means ot the stop pins f, f6, secured to the plate A, near the opposite edges of the disks.

The engaging members may be held loosely at the end of the engaging lever l5, as shown in Figs. 1S and 19, in which the engaging member 7i is made of tlattened construction, and provided with a shank n2, which is held loosely in the perforation its in the end of the lever l5 thus allowing the engaging member to tit fairly against the coilsj notwithstanding the varying inclination ot' the lever l5 with respect to the axis of the worm.

Another modification of myinvention adapted for a clock movement' is shown in Figs. 23 and 2a, in which a single engagement lever I4, is employed, the said lever being provided with the two opposite engaging members 7a4, h5, arranged at opposite sides of the axlefot the escapement wheel H, for action upon the right and left hand worms g', g2, arranged upon the said axle, which may be supported in the fixed bearings d2, c2, connected to any suitable support. The lever lL is provided with the pivot axle e3, which is supported in the bearing standards et, et, upon the disk K4, the said disk being pivoted upon the screw f2. To the disk K4, at the points d2, d3, are

pivoted the catch levers Y, Y, extending in opposite directions from their pivoting points, for engagement with the teeth e2 ofthe wheel E. The catch levers Y, Y', are each provided with a stud 03, 0*, which is connected with one ot the oppositely projecting arms 05, 0G, upon the pivot axle es, and the studs o3, 05, are connected by means of the spiral spring s3, and the studs ot, o, are connected by means of the spiral spring st, and the movement of the engaging members 7L, 7L, of the lever l, toward and from the axlef of the escapement wheel Il, is limited by means of the screw stud .55, and the nuts s, 87; the said screw stud being secured to the disk Kt, and passing through a perforation in the lever Il, and by this means the said engaging members may be so adjusted that they will not bear against the said axle, to prevent the ready rotation of the same, and the outward movement of the catch levers Y, Y is limited by the stop pins r6, r6..

TOO

The operation of the device will be as follows: When the catch lever Y is in engagement with the tooth e2 of the wheel E, as shown in Fig. 23, and the engaging member h4, is in engagement with the coils p3 of the Worm, then upon the continued forward movement of the tooth e2, the disk K4 will be turned upon its pivot screw f2, causing the movement of the lever I4, and the engaging members h4, h5, in the direction away from the side c2 of the escapement wheel, the engaging member h4 being'in engagement'with the coils of the worm g', and the opposite engaging member h5, out of engagement with its worm g2, and upon the continued movement of the engaged tooth e2, the disk K4, will be turned, so as to draw upon the spring s3, until the engaging member h4 passes out of engagement with the worm g, into the space nbetween the worms g2g?, and thereupon the lever I4 being re lieved from pressure, the accumulated resilience of the spring s3, will instantly cause the outward movement ofthe engaging member h4from thelaxle f,and the inward movement of the opposite engaging member h5, to the position shown in Fig. 24, and the instant out- Ward movement of the catch lever Y, from engagement with the tooth e2; whereupon, the opposite tooth e2, will become engaged with the catch lever Y', to reverse the motion of the disk K4, and lever I4, so that the movement of the engaging member h5 along the worm g2, which is cut reversely to the worm g', will cause the escapement wheel H to be turned in the same direction as before; the movement of the disk K4, upon its pivot, causing a pull upon the spring s4, so that when the engaging member h5 passes out of the worm g?, into the space n3, the accumulated resilience of the spring s4, will cause the instant outward movement of the engaging member h5, from the axle f, and the inward movement of the opposite engaging member h4, andthe instant outward movement of the catch lever Y', from engagement with the tooth e2; whereupon, the opposite tooth e2 will become engaged with the catch lever Y, to again reverse the motion of the disk K4, and lever I4; and this operation continuously repeated, will serve to impart continuous rotation to the escapement wheel H.

In order to impart a movement to the engaging members h4, h5, parallel to the axis of v the axle f, instead of causing the same to be moved in the arc of a circle, the said engaging members may be held upon a carriage Z,

adapted to slide upon the cylindrical rod n4, supported by the standards a5, the said sliding carriage being provided with the socket n?, adapted to receive the spherical end n", of theoperating lever I6, which takes the place of the lever I4, shown in Figs. 23 and 24:, and in this case, the engagement and disengagement of the engaging members with their respective worms, will be as before, except that the engaging movement of the carriage by rocking` on the rod n4, will be the reverse of that of the lever I4.

Instead of the two worms g and g2, a worm formed with the right and left hand spiral grooves t5 and t6, as shown in Figs. 27 and 28, may be employed, and in that case, the engaging members h4, h5, of elongated form are set for engagement with their respective grooves, at opposite sides of the axis of the axle f, and the application of a sliding carriage Z', provided with engaging members adapted for engagement with the reverse spiral groovestf and t6, is shown inFig. 29, the lever I6, being employed to operate the carriage, as in Fig. 2

It is to be understood that I do'not limitl myself to the particular mode of operating f the engaging members in their alternate en'- gagement and re-engagement with thev `spiral groove of the worm, as there are various methods for effecting the required movement of the same from the movement of the wheel E, the examples given being deemed a suffi- 'cient exemplication of the principleinvolved.

I do not in this application claim broadly,

the combination with thetoothed wheel, and

the worm, of a reciprocatory engaging-*memiber adapted to traverse thecoilsof the Worm in one direction, and to pass outside of the said coils in the opposite direction, and an engaging catch connected with the engaging member, and bearing against the tooth of the wheel, the same having been claimed by me as a mechanical movement, in my'pending application Serial No. 493,278; my vpresent invention being limitedl to the combination of the same with an escapement mechanism.

I claim as my invention-. l.

1. In a time piece, the combination with an escapement mechanism, the worm, and the toothed driving wheel, of an intermediate reciprocatory engaging member, adapted to traverse the coils of the worm in one direction, and to pass outside'of the saidy coils in the opposite direction, and the catch engaging with the teeth of the driving wheel toimpart the traversing movement to the engaging member, substantially as described. i

2. In a time piece, the combination with an escapement mechanism, the worm, and the toothed driving wheel, of an intermediate-en-` gaging member adapted to traverse'the coils of the worm, an engaging catch adapted to bear against ka tooth of the wheel to operate the engaging member, and a spring adaptedA to cause the disengagement of the engaging member, and the operating catch', upon the completion of the traversing movement of the engaging member, through the coils of the worm, substantially as described.` Y

3. In a 'time piece, the combinationv with' an escapement mechanism, the worm, andthe toothed driving wheel, of an intermediate engaging member adapted to traverse the coils of the worm, an engaging catch adapted to IOO IIO

bear against a tooth of the wheel to operate the engaging member, a spring adapted to cause the disengagement of the engaging member and the operating catch, upon the completion ofthe traversing movement of the engaging member, and means for carrying the engaging member back to its starting point for re-engagement, substantially as described.

4r. In a time piece, the combination with an escapement mechanism, the worm, and the driving wheel, of the opposite engaging members, and suitable connections with the driving wheel, for operating the engaging inembers alternately through the coils ofthe Worm, substantially as described.

5. In a time piece, the combination with an escapement mechanism, the worm, and the toothed driving wheel, of the opposite alternately engaging members, and the catches adapted for alternate engagement with the teeth of the driving wheel, to cause the traverse of the engaging members through the coils of the Worm,substantially as described.

G. In a time piece, the combination with an escapement mechanism, the worm, and the toothed driving wheel, ot the pivoted disks at opposite sides of the driving Wheel, the opposite engaging members, supported upon the pivot axles, the loosely held catches for engagement with the teeth of the driving wheel, the springs for swinging the engaging members toward the axle of the Worm and the engaging catches, toward the teeth of the driving Wheel, the springs for swinging the engaging members away from the axle of the Worm, and the catches away from the teeth of the driving wheel, and the springs for turning the pivot axles, to carry back the engaging members for re-engagement with the worm, substantiallyT as described.

7. In a time piece, the combination with the escapement mechanism and the eccentric, of the toothed minute Wheel, and the engaging lever having an eye fitting the eccentric, and the spurs, adapted to engage alternately with the teeth at the opposite edges of the minute Wheel, substantially as described.

8. In a time piece, the combination with the escapement mechanism, and the eccentric, of the toothed minute wheehand the compound engaging lever, having an eye fitting the eccentric, and the spurs adapted to engage alternately with the teeth at the opposite edges of the minute Wheel, substantially as described.

9. In a time piece, the combination with the axle of the escapement Wheel, the eccentric and the minute Wheel, of the engaging lever, fitting the eccentric and having forked engaging spurs, adapted to engage alternately with the points and sides of the teeth at the opposite edges of the Wheel, substantially as described.

IO. In a time piece, the combination with` the axle of the escapement wheel, the eccentric, and the minute Wheel, of the pinion upon the axle of the escapement Wheel, the two-fold gear provided with an axle passing through .the hub of the minute Wheel, and the engaging lever fitting the eccentric, and having forked spurs adapted to engage alternately With the points and sides of the teeth, at opposite edges of the wheel,substantially as described.

Il. In a time piece, the combination with the axle of the escapement Wheehof the minnte Wheel, the lever provided with opposite spurs adapted to engage with the teeth of the minute Wheel, means for operating the said lever from the axle of the escapement Wheel, the minute hand upon the hub of the minute wheel, the hour gear and hourhand,upon the hub of the minute Wheel, and the intermediate gears for connecting the gears of the minute and hour hands, substantially as described.

12. In a time piece, the combination with the driving axle, the spring arbor attached to the axle, the mainspring attached to the spring arbor, the Winding barrel loose upon the driving axle, and the ratchet wheel and click, of the honr hand attached to the driving axle, the common gear frictionally held upon the driving axle, the loose pinion, the minute hand attached tc the hub of the loose pinion under the hour hand, and the intermediate gear and pinion which serves to transmit motion trom the frictionally held common gear upon the driving shaft, to the loose pinion carrying the minute hand, substantially as described.

NOIVMAN M. SAATI.

- Witnesses:

SOCRATES SGHOLFIELD, JAMES W. BENMAN.

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